Results 31 to 40 of about 2,495 (215)

Effect of Salinity Differences on Phytoplankton Density (Skeletonema costatum)

open access: yesEdunity Kajian Ilmu Sosial dan Pendidikan, 2023
This study aims to determine the effect of differences in salinity on the density of phytoplankton (Skeletonema costatum). The method in this study used a completely randomized design with 4 treatments and 3 replications. The parameters tested included the density rate of Skeletonema costatum. Data analysis uses One Way Anova to see the significance of
Darmawan Sudarman   +4 more
openaire   +1 more source

Desenvolvimento sustentável da cadeia produtiva do biodiesel: obtenção de biomassa microalgal em cultivo mixotrófico com glicerina residual

open access: yesVetor, 2013
Um aspecto importante na obtenção do biodiesel de forma sustentável é o destino a ser dado à glicerina obtida no processo, como por exemplo a sua bioconversão em biomassa e biomoléculas de interesse comercial.
Daniela Nogueira   +2 more
doaj   +4 more sources

Toxic effects of complex mixed organic compounds in aerosols on Skeletonema costatum [PDF]

open access: yesE3S Web of Conferences
Considering the complexity of organic components in aerosols, this study aimed to compare the toxic effects of mixed PAHs and the highly toxic benzo[a]pyrene on Skeletonema costatum (S. costatum).
Li Jiajia, Feng Lei
doaj   +1 more source

Evaluation of different types of phytoplankton on rearing of vannamei shrimp larva (Litopenaues vanamei)

open access: yesActa Aquatica, 2022
This study aims to determine the effect of giving different types of phytoplankton on the survival, abundance of bacteria, and water quality of white shrimp (Litopenaeus vannamei).
Ratnawati Ratnawati   +2 more
doaj   +1 more source

Seawater carbonate chemistry and growth and photosynthetic oxygen rate and respiration rate of Skeletonema costatum and Ulva linza [PDF]

open access: yes, 2019
Red tide and green tide are two common algal blooms that frequently occur in many areas in the global oceans. The algae causing red tide and green tide often interact with each other in costal ecosystems.
Beardall, John   +4 more
core   +1 more source

Diatomáceas indicadoras de paleoambientes do Quaternário de Dois Irmãos, Recife, PE, Brasil Diatoms as indicators of paleoenvironments during the Quaternary at Dois Irmãos, Recife, Pernambuco State, Brazil

open access: yesActa Botânica Brasílica, 2007
O trabalho apresenta o levantamento da diatomoflórula identificada em sedimentos do Quaternário da Lagoa das Diatomáceas (Dois Irmãos, Recife), baseado em um testemunho de sondagem com 4,5 m, tendo sido analisadas amostras com intervalos de 10 em 10 cm ...
Giane Soares de Souza   +3 more
doaj   +1 more source

Oxidative stress and growth behavior responses of marine diatoms Phaeodactylum tricornutum and Skeletonema costatum to three typical persistent organic pollutants [PDF]

open access: yes, 2010
To study the oxidative stress responses and growth behavior of marine diatom to persistent organic pollutants (POPs), Phaeodactylum tricornutum and Skeletonema costatum, two species of algae which are potentially harmful to marine environment as red tide
Qu,Ying   +9 more
core   +1 more source

Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea

open access: yesOceanological and Hydrobiological Studies, 2022
The presented laboratory experiment was designed to characterize the quantity and compositional variation of algal extracellular amino acids (AAs) that may represent an alternative nutrient source in a natural environment.
Hosny Shimaa   +2 more
doaj   +1 more source

Oxidative stress responses in two marine diatoms during acute n-butyl acrylate exposure and the toxicological evaluation with the IBRv2 index

open access: yesEcotoxicology and Environmental Safety, 2022
n-Butyl acrylate (nBA), a typical hazardous and noxious substance (HNS), is the largest-volume acrylate ester used to produce various types of polymers. With the increasing volume of nBA subject to maritime transportation, its accidental leakage poses a ...
Shuhao Du   +5 more
doaj   +1 more source

Sexual Reproduction of Centric Diatom Skeletonema costatum

open access: yesNIPPON SUISAN GAKKAISHI, 1967
The sexual reproduction and auxospore formation of Centrales had been misinterpreted for a long time. It was believed until recently that auxospore formation had no connection with sexual reproduction. More recently, however, STOSCH2) demonstrated oogamy clearly in Melosira varians for the first time, and since then STOSCH4-8) and GEITLER9, 10) studied
openaire   +2 more sources

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